Improved machine for polishing needles



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taut @at C. O. CROS-BYOF NEW HAVEN, CONNECTICUT.

Letters Patent No. 8.7 ,826, dated March 16, 1869.i

IIMROVED lllzQHlNEl FOR POLISHING- NEEDLES.

To all whom it may concern:

ABe it known that I, C. O. CROSBY, of New Haven, in the county of New Haven, and State of Connecticut, have invented a new Improvement in Machine for Polishing Needles; and I do hereby declare the following, when taken in connection -with the accompanying drawings, and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute'part of this specification, and represent, in-

Figure 1, a side view;

Figure 2, altop View;

Figure-3, alongitudinal 'central section; and in Figures 4 and 5, transverse sections.

The object of this invention is the construction of a machine which, receiving the needles, will automatically polish and finish the needles after they have been tempered; and

The invention consists incombining, with a carrying-device, an apparatus which, while the needles are travelling longitudinally, shall rotate the needles on the said carrying-device during their passage under the polishing-cylinder.

To enable others skilled in the art to construct and use my improvement, I will fully describe the same as illustrated in the accompanying drawings.

A is the bed-plate, supported -upon legs B,-and upon which, in proper bearings, C, the driving-shaft D is arranged, and, through a bevel-gear, EF, communicates motiouto a second shaft, E, supported in bearings G, and from which last-named shaft power is communicated to athird shaft, H, through a worm, I; and in the said shaft H is arrangedI a wheel, L, and upon the opposite side of thetable, upon a shaft, H', is arranged a corresponding shaft, L', and around the two passes a band, M, as more clearly seen in 6g. 3.

yUpon the table is arranged a platform, A', upon the surface of which the band lies, and passes freely thereover.

Above the upper surface of the band are arranged polishing-cylinders, P, more or less in number, here represented as four, the said cylinders being driven rapidly by the application of power thereto, through pulleys, a. Q

The needles being placed upon the band, the band traversing and the cylinders revolving, the needles are carried along endwise between the cylinders and band, and should be points first. In thus carrying the needles, it is necessary that a rotary movement be given to the needles, in order that all parts of the needle be presented to the polishing-cylinders. To this end, I arrange between the cylinders, and also upon the outside, plates d, which lare supported in a car1iage,b, and to which said carriage a vibrating movement is given, by a cam, D', .on thed'riving-shaft, through a rod, C', having an inclined slot, f, in which said slot the connection of the carriage is placed, so that, as the rod C passes back and forth, by the action of the cam D', the

saidfplatcs d pass transversely back and forth across the band, as from the position in iig. 4 to that infg. 5, and vice versa, and, resting Aupon the needles, impart to the needles a rolling motion as they pass along beneath the cylinders, by the movement of the band.

I find it advantageous, in maintaining parallelism of the needles, to arrange, upon the under side of the plates d, a downward-projecting ange, n, as seen in Figure 6, enlarged, of alittle less depth than the diameter of the needles, and 'so that, as 4the plates pass back and Iforth, the flange upon one side will strike the ou t. side needle upon the same side, and the other flange, upon the return of the plate, will strike upon the opposite side, and thus maintain the needles, parallel, if

they are inclined to turn from such linein their passage.

A third ange, t, maybe arranged in the centre, forming two channels, throughwhich the needles pass, and thus increase the facility for retaining the needles parallel.

From the carriage to the rear, or entrance, I extend out ar1nss, which vibrate with the carri-age, and produce a similar effect to that described for the flange n, so that the needles may properly enter beneath the first; and in case the central flange t' be used, I arrange, upon the rear plate, a corresponding arm, t, between the two arms f.

I arrange a spring, lr, so as to give to the plates d a slightly-elastic pressine, which spring may be applied in various ways. l

By this construction, the needles placed upon the band are i passed along beneath the cylindershand, by

the rotary motion given them by the plates d', are polished and finished ip the most perfect manner.

To deliver the needles on to the band, I arrange a conductor, S, into which the needles are placed, points downward, and by any gentle agitation given to the said conductr, or by its own inclination, the needles are conductedand delivered on to the said band, in the proper position. to pass along and be nished.

The agitation is here represented as given by a manyi sided, or toothed cam, E, actingl upon a lever, E2, upon which the `conductor S rests.

To prevent the needles from going too rapidly on to y the carrying-device, I narrow the conductor S at S, so that more than a certain number passing over that portion of the conductor will fall from the conductor into a receiver, S2.

' Having passed along beneath the rollers, in being finished, the needles are carried to a conductor, .'I,

which should be so inclined that the needles, by their own gravitation, will slide down and pass into a receptacle, polished and finished, with their heads all in one direction. l

The ynicety of finish of the needles depends entirely upon the polishing-cylinders.

To those skilled in1 the art, it will be readily seen that the cylinders may be multiplied in number to any being of ner lateral movement,

Having fully described my invention,

What I claim as new and` useful, and desire to secure by Letters Patent, is-

l. The combination of the inclined feeding-device, guides, transversely-moving pressure-pla". es, polishingcylinders, and discharging-conductor, all arranged and operating togethei, as set forth.

2. The arrangement ofthe transversely-moving prees-v ure-plate, polishiug-cylinders, and for the purpose specied.

and carrying-device, as

3. The construction and arrangement, with reference to each other and to the polishing-cylinders, of the conductor S S', and guides s s t, with a carrying-device, in the manner shown and described.

4. The arms s, constructed and arranged as described, in combination with the revolving cylinders and band, or carrying-device, so as to guide the needles, substantially as described.

5. The improved machine herein described, the constituent parts of Whose mechanism are constructed ahd arranged as described. A.

6. In combination with the carrying-device, pressureplates, and polishing-cylinders, the discharge-conductor T, substantially as and for the purpose specified.

O. O. CROSBY. Witnesses:

A. J TIBBITS, J. H. SHUMWAY. 

